I mean, really ... we see Boo goofing around all the time, but let´s not forget: DBSuper is set directly after the end of Z, and that ended with Boo as THE strongest individual fighter. Even Goku had to use the kinda cheat movie Genkidama to defeat him.

Actually, I forgot ... what is Boo´s position within the universe, compared to Kaios and Beerus?